Gas-pressure regulator



' May-8,1923, 1,454,211

W.. P. CAPPS GAS PRESSURE REGULATOR Filed OCC. 16. 1922' connection withan inlet pipe` Patented May 8, 1923.

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-clis-rnnssman REGULATOR. i

Application .led October 167 1922. Serial No. 594,928.

To all whom t may concern:

Be it known that I, lVLLrAM P. Carrs, a citizen ofthe United States,residing at Shreveport, in the parish of Caddo and State of Louisiana,have invented new and useful Improvements in Gas-Pressure Regulators, ofwhich the following is a specification. v

This invention relates to pressure regulating devices, particularly todry gasometers, and has for its object the provision of a novel pressureregulating device of the diaphragm type in which the automatic controlvalve and operating parts therefor are entirely enclosed within thedevice itself instead of being exteriorly arranged as is the commonpractice.

An important object is the provision of a device of this character whichwill be simple and inexpensive in manufacture, highly efficient in use,positive in action, durable in service and a general improvement in theart. f

With the above and other objects and advantages in view the inventionconsists in the details of construction to be hereinafter more fullydescribed and claimed and illustrated in the accompanying drawings, inwhich:

Figure 1 is an elevation of the device,

Figure 2 is a longitudinal section and Figure 3 is a section at rightangles to Figure 2,

Referring more particularly to the drawings the numeral' 10 designatesthe casing or shell which is preferably slightly conical though it maybe purely cylindrical if preferred. The open side of this shell isformed with an outwardly extending flange 11 against which is disposedthe sheet rubber diaphragm 12 held in place by a cap 13 provided with anoutwardly extending iange 14 clamped against the flange 11 by suitablebolts 15 or the like. At one side the shell is formed with a threadednipple 16 for connection with an outlet pipe and at a preferablydiametrically opposite point the shell is provided with a threadednipple 17 for The nipple 17 leads to a passage member 18 within theshell, this passage member being also formed with a threaded opening 19.

Extending centrally through the diaphragm 12 isa stem 2O which has itsouter end smooth and slidable through a boss 21'y ate portion lthreadedand ycarrying clamping Vnuts .22 which :bear against lclamping washers23 disposed against opposite sides of the diaphragm so that thediaphragm will be firmly clamped with respect to the stem 20.

Located within the shell 10 is a valve including a casing 24 having oneend screwed into the threaded hole 19 and having its other end open andcommunicating with the interior of the shell. valve casing is a plugvalve 25 having an operating stem 26 projecting beyond one side of thecasing 24 and carrying an angle lever 27 which is pivotally connected at28 with the inner end of the stem 20.

In the operation it will be seen that gas entering the nipple 17 willpass through the passage 18 and out through the valve casing 24:- intothe shell 10, and that the gas will pass from the shell through theoutlet nipple 16. The parts must of course be initially adjusted to thepressure desired. In the event that the gas pressure increases beyondthe certain desired predetermined point the diaphragm 12 will bulgeoutwardly and this will result in longitudinal outward move- Rotatablewithin this ment of the stem 20, owing to the fact that j this stem issecured to the diaphragm. When the stem thus moves, the angle lever 27will be rocked and this will result in partly closing the valve 25 sothat the ilow of gas through the device will be destroyed. In

case the pressure drops too greatly the tendency of the diaphragm tomove to an absolutely flat state will result in swinging the angle lever27 in the other direction so that the valve will be opened to permitadditional gas to flow into the shell.

From the foregoing description and a study of the drawings it will beapparent that I have thus provided a simply constructed and consequentlyinexpensive dry gasome- While I have shown and described the preerredembodiment of the invention it is oi course to be understood that Ireserve the right to make such changes in the form, construction andarrangement of parts as will not depart from the spirit of the inventionor'the scope of the subjoined claim.

Having thus described my invention l claim: I

A device of the character described coinprising al shell having a cover,a flexible diaphragm held taut between the shell and its cover, a stemslidable through the cover and secured to the diaphragm and passingtherethrough7 said shell having an outlet nipple and formed With apassage member leading from an inlet nipple, a valve located Within theshell and including a cas ing communicating With said passage member andwith the interior of the shell, a plug rotatable Within the valvecasing, an angle lever secured to the projecting end orn said plug and apivotal connection between said stem and the angle lever.

ln testimony whereof I alii); my signature.

WILLIAM P. CAPPS.

